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Arranging your office
Here are some guidelines for adjusting the furniture in your office to
accommodate your physical size and shape.
m An adjustable chair that provides firm, comfortable support is best. Adjust
the height of the chair so that your thighs are horizontal and your feet flat
on the floor.
The back of the chair should support your lower back (lumbar region).
Follow the manufacturer’s instructions for adjusting the backrest to fit your
body properly.
m When you use the computer keyboard, your shoulders should be relaxed.
Your upper arm and forearm should form an approximate right angle, with
your wrist and hand in roughly a straight line.
You may have to raise your chair so that your forearms and hands are at the
proper angle to the keyboard. If this makes it impossible to rest your feet
flat on the floor, you can use a footrest with adjustable height and tilt to
make up for any gap between the floor and your feet. Or you may lower
the desktop to eliminate the need for a footrest. Another option is to use a
desk with a keyboard tray that’s lower than the regular work surface.
m Position the mouse at the same height as your keyboard. Allow adequate
space to use the mouse comfortably.
Thighs horizontal
Shoulders relaxed
Screen positioned to avoid
reflected glare
Forearms and hands
in a straight line
Forearms level
or tilted up slightly
Lower back supported
Feet flat on the floor
Top of the screen at or slightly
below eye level (You may need
to adjust the height of your
monitor by placing something
under it or by raising your
work surface.)
Clearance under work surface
45–70 cm (18–28 in.)
Health-related information about computer use 83